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04-01-2011, 08:47 PM   #1
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DA 40mm F2.8 Limited or DA 35mm f/2.4 AL ....

DA 40mm F2.8 Limited or DA 35mm f/2.4 AL ....

torn. Naturally, the 40LTD speaks for itself and its attributes have been well spoken to on this forum. But the 35mm f/2.4 is intriguing, and i'm debating between the two. Other, naturally, than the build quality, any notable comaprisons/contrasts? The reviews of the 35 f2.4 are very promising, its a stop faster....and cheaper. I realize the FL need is dictated upon your shooting preferences, but that aside, has anyone used both?

04-01-2011, 08:52 PM - 1 Like   #2
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I would go for the 40mm. It's a Limited lens, it's metal built, it is extremely sharp, beautiful contrast and character, and it's smaller and more compact. I would only go for the 35mm if you really want the extra 5mm. Or you can take half a step back... =]
04-01-2011, 09:22 PM   #3
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Half a stop faster, made of plastic, plastic mount, no quick shift, no hood

for budget photogs, the focal lengths can be considered equivalent.

I expect they both perform amazingly.
04-01-2011, 09:27 PM   #4
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I have the DA 35mm f/2.4 and it's a great lens, especially for the price. But if the extra $120 or so for the DA 40mm f/2.8 isn't a problem and you don't need the extra 5mm in width (7.5mm in effective extra width in full-frame terms), then by all means go for the Limited. It is built better and is sharper and more contrasty than the cheaper lens. But the DA 35mm f/2.4 is no slouch. If money is a bit tight, be confident that the 35 is a solid purchase. Oh, and one last thing: The aperture difference between f/2.4 and f/2.8 is actually a half stop; f/2.0 to f/2.8 is a full stop.

04-01-2011, 09:39 PM   #5
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QuoteOriginally posted by Biro Quote
....Oh, and one last thing: The aperture difference between f/2.4 and f/2.8 is actually a half stop; f/2.0 to f/2.8 is a full stop.
aahhhh, my oversight. Good stuff, appreciate the input
04-01-2011, 09:42 PM - 1 Like   #6
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i overlooked this very thorough comparison

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/124119-da-40mm...m-f2-4-al.html
04-02-2011, 07:56 AM   #7
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I finally got a chance to use my 35mm f2.4 yesterday and took almost 400 shots with it. For my shooting needs I find that I still consistently prefer something wider than 35mm. At one point I had considered the 40mm before I bought the 35mm. However, in response to the question in the OP, I would answer with:

Are you sure you don't want to choose between the 21mm and the 35mm?

The difference here (besides FL) is the 21mm is a bit more than the 40mm. I can guarantee I will never buy the 40mm because I know that this FL is not one I would prefer to use on a regular basis.
07-12-2011, 12:39 PM - 1 Like   #8
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The DA35/2.4 is tempting since I have the FA50/1.4 and a lot of 50ish lenses. It's also a steal, but the 40mm is a gateway into the limiteds. I wonder if they make it so cheap so that you'll get hooked and buy the rest of their limited primes.

07-12-2011, 02:24 PM   #9
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DA 40 is the better lens because it just does not flare. The 35 is pretty flare prone, and requires a good hood. This makes the 35 substantially larger than the 40 with a hood mounted, and the price difference even smaller.

DOF control is pretty much equivalent, and I don't think either are the best choice for low light (if high iso does not cut it, that extra 1/2 stop isn't going to save you).

Best reason *not* to get the 40 is that you want a fast 50. Those two focal lengths are too similar, and the extra 2 stops a 50 will give you *are* worth the size difference IMHO.

PS both choices work on film, which is a real bonus!
07-12-2011, 03:12 PM   #10
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I was debating this a while back and eventually went with the da35 2.4. In hindsight, i would have gone with the da40. Notthat the da35 is terrible not at all. Its a very good lens but the 1/2 stop that the 35 has isnt very noticable. Most of the time i use 2.8 on it for low light. The da40 is metal and has better build quality and in the end worth more. What it really comes down to is price in my opinion.
07-13-2011, 02:50 PM   #11
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QuoteOriginally posted by paperbag846 Quote
Best reason *not* to get the 40 is that you want a fast 50. Those two focal lengths are too similar, and the extra 2 stops a 50 will give you *are* worth the size difference.
I disagree about the similarity of the focal lengths. I replaced a 50 in my bag with the 40 precisely because of the difference in focal length, which I find very significant. The 35 versus 40 difference is rather less significant to me.

But I do agree that if the 50mm focal length works for you, those extra two stops are indeed a plus, even if they don't really save you in low light because you give up so much in DOF.
07-13-2011, 08:54 PM   #12
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DA 40mm
07-13-2011, 09:10 PM   #13
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I'd buy the DA40, the build to superb. Screw drive primes should last forever, so buy the one with the good build quality so it really will last forever.
07-14-2011, 08:23 AM   #14
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QuoteOriginally posted by Marc Sabatella Quote
I disagree about the similarity of the focal lengths. I replaced a 50 in my bag with the 40 precisely because of the difference in focal length, which I find very significant. The 35 versus 40 difference is rather less significant to me.

I suppose I wasn't very clear (as usual). I agree - the idea is... if you have the 40, the 50mm length does not make sense to also own in prime form, and vica versa. They should be primarily selected based on focal length, but I think that *in general* more people would be happy with the 40 than the 50 (because of the focal length).

W.R.T sharpness, both lenses are pretty much equal.

W.R.T colour, contrast, flare resistance, autofocus speed, build quality, the DA 40 is a clear winner to me.

W.R.T dof control, the FA 50 wins.

So you would need to really want dof control, or to prefer the focal length, to want the 50.

--

Anyway, between the 40 and 35, I personally think the 40 is worth the extra 80-100 bucks.
07-14-2011, 11:40 AM   #15
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There's less of a reason to get the DA 40mm f/2.8 when the new DA 35mm f/2.4 is a lot cheaper, has a more versatile angle of view imo and the image quality is darn good. Plus you can get colored versions of this lens.
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